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MO: Fachverband Molekülphysik

MO 17: Stossprozesse, Energietransfer 2

MO 17.1: Vortrag

Mittwoch, 4. März 2009, 16:30–16:45, VMP 6 HS-G

A new CD3 REMPI transition accidentally foud by imaging spectroscopy — •Jens Riedel¹ and Kopin Liu² — ¹Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin — ²Institute of Atomic and Molecular Sciences (IAMS), Academia Sinica, Taipeh, Taiwan

In the course of a crossed beam imaging study of the reaction dynamics of Cl + CHD₃(1₁3₁) → HCl + CD₃, an unexpected ring-like feature was observed on the CD₃ ground state (0₀) product image. Using the technique of ion imaging spectroscopy, the mysterious feature was tentatively ascribed to the formation of the vibrationally excited CD₃(3₁4₁) product from the above combination-band excited reaction. The intriguing aspect of the present finding is that the corresponding (2+1)-REMPI band of CD₃(3₁4₁) appears totally hidden by the more intense CD₃(0₀) origin band, yet the two-dimensional nature of ion imaging technique enables us to decipher its spectral character and extract the otherwise lost dynamical information.